CHEMICAL REACTION ENGINEERING QUIZ

Smaller reactor followed by larger one

Data insufficient, can

Large reactor followed by smaller one

Either of the arrangement A or B will give the same yield

Alters the value of equilibrium constant in a reversible

Increases the speed of a

Can either increase or decrease the speed of a

Decreases the speed of a

The unit of space velocity is (time)⁻¹

The space velocity of 3 hr⁻¹ means that three reactor volumes of feed at specified conditions are being fed into the reactor every hour

None of these

The space velocity of 3 hr⁻¹ means that one third reactor volume of feed at specified conditions are being fed into the reactor

Space time is equivalent to holding time for constant density systems

Composition throughout the reactor remains same

All of these

Exit stream has the same composition as the fluid within the reactor

Poor product quality control

High shutdown time requirement for emptying, cleaning and refilling

All of these

High labour and handling cost

And decreases that of backward reaction

And backward reaction equally

Only

To a greater extent than that of the backward reaction

(time)-1 (concentration)n - 1

1/(time)(concentration)n - 1

None of these

(time)n - 1 (concentration)

All of these

Alters the reaction mechanism

Increases the frequency of collisions of reacting species

Decreases the activation energy

1

2

3

None of these

ND = (n + 1)/2

ND = n + 1

ND = n/2